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GeForce 9800 GX2 vs GeForce GT 340 1GB

Intro

The GeForce 9800 GX2 comes with a core clock frequency of 600 MHz and a GDDR3 memory speed of 1000 MHz. It also features a 256-bit bus, and uses a 65 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the GeForce GT 340 1GB, which features GPU clock speed of 550 MHz, and 1024 MB of GDDR5 memory set to run at 850 MHz through a 128-bit bus. It also features 96 Stream Processors, 32 Texture Address Units, and 8 ROPs.

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GX2 should in theory be a lot superior to the GeForce GT 340 1GB in general. (explain)

GeForce 9800 GX2

128000 MB/sec

GeForce GT 340 1GB

54400 MB/sec

Difference: 73600 (135%)

Texel Rate

The GeForce 9800 GX2 should be quite a bit (more or less 336%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

GeForce 9800 GX2

76800 Mtexels/sec

GeForce GT 340 1GB

17600 Mtexels/sec

Difference: 59200 (336%)

Pixel Rate

The GeForce 9800 GX2 should be quite a bit (approximately 336%) better at AA than the GeForce GT 340 1GB, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce 9800 GX2

19200 Mpixels/sec

GeForce GT 340 1GB

4400 Mpixels/sec

Difference: 14800 (336%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

GeForce 9800 GX2

GeForce GT 340 1GB

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x.
The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image).
The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

GeForce 9800 GX2

GeForce GT 340 1GB

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.